Add Plex Media Server observability (#13)

## Summary
- Add `plex_metrics` ansible role with textfile collector for Prometheus metrics
- Add Plex log collection to Alloy (forwards to Loki)
- Add Grafana dashboard for Plex monitoring (status, library counts, sessions, transcoding, logs)

## Metrics Collected
- `plex_up` - server health
- `plex_version_info` - server version
- `plex_sessions_total/playing/paused` - active sessions
- `plex_transcode_sessions_total/video/audio` - transcoding status
- `plex_library_items{library,type}` - library item counts

## Prerequisites
Plex token must be stored at `~/.plex-token` on indri (already done).

## Test plan
- [x] Dry-run passed (`mise run provision-indri -- --check --diff`)
- [ ] Apply changes (`mise run provision-indri`)
- [ ] Verify metrics: `ssh indri 'cat /opt/homebrew/var/node_exporter/textfile/plex.prom'`
- [ ] Verify logs in Grafana Explore: `{service="plex"}`
- [ ] Check Plex dashboard in Grafana

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Reviewed-on: https://forge.tail8d86e.ts.net/eblume/blumeops/pulls/13
This commit is contained in:
Erich Blume 2026-01-15 15:27:59 -08:00
commit ae1513e7e9
10 changed files with 919 additions and 0 deletions

View file

@ -0,0 +1,679 @@
{
"annotations": {
"list": []
},
"editable": true,
"fiscalYearStartMonth": 0,
"graphTooltip": 0,
"id": null,
"links": [],
"panels": [
{
"datasource": {
"type": "prometheus",
"uid": "prometheus"
},
"fieldConfig": {
"defaults": {
"color": {
"mode": "thresholds"
},
"mappings": [
{"options": {"0": {"color": "red", "index": 0, "text": "DOWN"}}, "type": "value"},
{"options": {"1": {"color": "green", "index": 1, "text": "UP"}}, "type": "value"}
],
"thresholds": {
"mode": "absolute",
"steps": [
{"color": "red", "value": null},
{"color": "green", "value": 1}
]
},
"unit": "short"
},
"overrides": []
},
"gridPos": {"h": 4, "w": 4, "x": 0, "y": 0},
"id": 1,
"options": {
"colorMode": "value",
"graphMode": "none",
"justifyMode": "auto",
"orientation": "auto",
"reduceOptions": {
"calcs": ["lastNotNull"],
"fields": "",
"values": false
},
"textMode": "auto"
},
"pluginVersion": "10.0.0",
"targets": [
{
"datasource": {"type": "prometheus", "uid": "prometheus"},
"expr": "plex_up",
"refId": "A"
}
],
"title": "Plex Status",
"type": "stat"
},
{
"datasource": {
"type": "prometheus",
"uid": "prometheus"
},
"fieldConfig": {
"defaults": {
"color": {
"mode": "palette-classic"
},
"mappings": [],
"thresholds": {
"mode": "absolute",
"steps": [
{"color": "blue", "value": null}
]
},
"unit": "string"
},
"overrides": []
},
"gridPos": {"h": 4, "w": 6, "x": 4, "y": 0},
"id": 2,
"options": {
"colorMode": "value",
"graphMode": "none",
"justifyMode": "auto",
"orientation": "auto",
"reduceOptions": {
"calcs": ["lastNotNull"],
"fields": "/^version$/",
"values": false
},
"textMode": "value"
},
"pluginVersion": "10.0.0",
"targets": [
{
"datasource": {"type": "prometheus", "uid": "prometheus"},
"expr": "plex_version_info",
"format": "table",
"instant": true,
"refId": "A"
}
],
"title": "Version",
"type": "stat"
},
{
"datasource": {
"type": "prometheus",
"uid": "prometheus"
},
"fieldConfig": {
"defaults": {
"color": {
"mode": "thresholds"
},
"mappings": [],
"thresholds": {
"mode": "absolute",
"steps": [
{"color": "green", "value": null},
{"color": "yellow", "value": 3},
{"color": "orange", "value": 5}
]
},
"unit": "short"
},
"overrides": []
},
"gridPos": {"h": 4, "w": 4, "x": 10, "y": 0},
"id": 3,
"options": {
"colorMode": "value",
"graphMode": "area",
"justifyMode": "auto",
"orientation": "auto",
"reduceOptions": {
"calcs": ["lastNotNull"],
"fields": "",
"values": false
},
"textMode": "auto"
},
"pluginVersion": "10.0.0",
"targets": [
{
"datasource": {"type": "prometheus", "uid": "prometheus"},
"expr": "plex_sessions_total",
"refId": "A"
}
],
"title": "Active Sessions",
"type": "stat"
},
{
"datasource": {
"type": "prometheus",
"uid": "prometheus"
},
"fieldConfig": {
"defaults": {
"color": {
"mode": "thresholds"
},
"mappings": [],
"thresholds": {
"mode": "absolute",
"steps": [
{"color": "green", "value": null},
{"color": "yellow", "value": 1},
{"color": "orange", "value": 2}
]
},
"unit": "short"
},
"overrides": []
},
"gridPos": {"h": 4, "w": 4, "x": 14, "y": 0},
"id": 4,
"options": {
"colorMode": "value",
"graphMode": "area",
"justifyMode": "auto",
"orientation": "auto",
"reduceOptions": {
"calcs": ["lastNotNull"],
"fields": "",
"values": false
},
"textMode": "auto"
},
"pluginVersion": "10.0.0",
"targets": [
{
"datasource": {"type": "prometheus", "uid": "prometheus"},
"expr": "plex_transcode_sessions_total",
"refId": "A"
}
],
"title": "Transcoding",
"type": "stat"
},
{
"datasource": {
"type": "prometheus",
"uid": "prometheus"
},
"fieldConfig": {
"defaults": {
"color": {
"mode": "palette-classic"
},
"mappings": [],
"thresholds": {
"mode": "absolute",
"steps": [
{"color": "purple", "value": null}
]
},
"unit": "short"
},
"overrides": []
},
"gridPos": {"h": 4, "w": 6, "x": 18, "y": 0},
"id": 5,
"options": {
"colorMode": "value",
"graphMode": "none",
"justifyMode": "auto",
"orientation": "auto",
"reduceOptions": {
"calcs": ["lastNotNull"],
"fields": "",
"values": false
},
"textMode": "auto"
},
"pluginVersion": "10.0.0",
"targets": [
{
"datasource": {"type": "prometheus", "uid": "prometheus"},
"expr": "count(plex_library_items)",
"refId": "A"
}
],
"title": "Libraries",
"type": "stat"
},
{
"datasource": {
"type": "prometheus",
"uid": "prometheus"
},
"fieldConfig": {
"defaults": {
"color": {
"fixedColor": "blue",
"mode": "fixed"
},
"mappings": [],
"thresholds": {
"mode": "absolute",
"steps": [
{"color": "blue", "value": null}
]
},
"unit": "short"
},
"overrides": []
},
"gridPos": {"h": 4, "w": 6, "x": 0, "y": 4},
"id": 6,
"options": {
"colorMode": "value",
"graphMode": "none",
"justifyMode": "auto",
"orientation": "auto",
"reduceOptions": {
"calcs": ["lastNotNull"],
"fields": "",
"values": false
},
"textMode": "auto"
},
"pluginVersion": "10.0.0",
"targets": [
{
"datasource": {"type": "prometheus", "uid": "prometheus"},
"expr": "sum(plex_library_items{type=\"movie\"})",
"refId": "A"
}
],
"title": "Movies",
"type": "stat"
},
{
"datasource": {
"type": "prometheus",
"uid": "prometheus"
},
"fieldConfig": {
"defaults": {
"color": {
"fixedColor": "green",
"mode": "fixed"
},
"mappings": [],
"thresholds": {
"mode": "absolute",
"steps": [
{"color": "green", "value": null}
]
},
"unit": "short"
},
"overrides": []
},
"gridPos": {"h": 4, "w": 6, "x": 6, "y": 4},
"id": 7,
"options": {
"colorMode": "value",
"graphMode": "none",
"justifyMode": "auto",
"orientation": "auto",
"reduceOptions": {
"calcs": ["lastNotNull"],
"fields": "",
"values": false
},
"textMode": "auto"
},
"pluginVersion": "10.0.0",
"targets": [
{
"datasource": {"type": "prometheus", "uid": "prometheus"},
"expr": "sum(plex_library_items{type=\"show\"})",
"refId": "A"
}
],
"title": "TV Shows",
"type": "stat"
},
{
"datasource": {
"type": "prometheus",
"uid": "prometheus"
},
"fieldConfig": {
"defaults": {
"color": {
"fixedColor": "orange",
"mode": "fixed"
},
"mappings": [],
"thresholds": {
"mode": "absolute",
"steps": [
{"color": "orange", "value": null}
]
},
"unit": "short"
},
"overrides": []
},
"gridPos": {"h": 4, "w": 6, "x": 12, "y": 4},
"id": 8,
"options": {
"colorMode": "value",
"graphMode": "none",
"justifyMode": "auto",
"orientation": "auto",
"reduceOptions": {
"calcs": ["lastNotNull"],
"fields": "",
"values": false
},
"textMode": "auto"
},
"pluginVersion": "10.0.0",
"targets": [
{
"datasource": {"type": "prometheus", "uid": "prometheus"},
"expr": "sum(plex_library_items{type=\"artist\"})",
"refId": "A"
}
],
"title": "Music Artists",
"type": "stat"
},
{
"datasource": {
"type": "prometheus",
"uid": "prometheus"
},
"fieldConfig": {
"defaults": {
"color": {
"fixedColor": "purple",
"mode": "fixed"
},
"mappings": [],
"thresholds": {
"mode": "absolute",
"steps": [
{"color": "purple", "value": null}
]
},
"unit": "short"
},
"overrides": []
},
"gridPos": {"h": 4, "w": 6, "x": 18, "y": 4},
"id": 9,
"options": {
"colorMode": "value",
"graphMode": "none",
"justifyMode": "auto",
"orientation": "auto",
"reduceOptions": {
"calcs": ["lastNotNull"],
"fields": "",
"values": false
},
"textMode": "auto"
},
"pluginVersion": "10.0.0",
"targets": [
{
"datasource": {"type": "prometheus", "uid": "prometheus"},
"expr": "sum(plex_library_items{type=\"photo\"})",
"refId": "A"
}
],
"title": "Photos",
"type": "stat"
},
{
"datasource": {
"type": "prometheus",
"uid": "prometheus"
},
"fieldConfig": {
"defaults": {
"color": {
"mode": "palette-classic"
},
"custom": {
"axisBorderShow": false,
"axisCenteredZero": false,
"axisColorMode": "text",
"axisLabel": "",
"axisPlacement": "auto",
"barAlignment": 0,
"drawStyle": "line",
"fillOpacity": 10,
"gradientMode": "none",
"hideFrom": {
"legend": false,
"tooltip": false,
"viz": false
},
"insertNulls": false,
"lineInterpolation": "linear",
"lineWidth": 1,
"pointSize": 5,
"scaleDistribution": {
"type": "linear"
},
"showPoints": "auto",
"spanNulls": false,
"stacking": {
"group": "A",
"mode": "none"
},
"thresholdsStyle": {
"mode": "off"
}
},
"mappings": [],
"thresholds": {
"mode": "absolute",
"steps": [
{"color": "green", "value": null}
]
},
"unit": "short"
},
"overrides": [
{
"matcher": {"id": "byName", "options": "Playing"},
"properties": [
{"id": "color", "value": {"fixedColor": "green", "mode": "fixed"}}
]
},
{
"matcher": {"id": "byName", "options": "Paused"},
"properties": [
{"id": "color", "value": {"fixedColor": "yellow", "mode": "fixed"}}
]
}
]
},
"gridPos": {"h": 8, "w": 12, "x": 0, "y": 8},
"id": 10,
"options": {
"legend": {
"calcs": ["mean", "max"],
"displayMode": "list",
"placement": "bottom",
"showLegend": true
},
"tooltip": {
"mode": "multi",
"sort": "none"
}
},
"pluginVersion": "10.0.0",
"targets": [
{
"datasource": {"type": "prometheus", "uid": "prometheus"},
"expr": "plex_sessions_playing",
"legendFormat": "Playing",
"refId": "A"
},
{
"datasource": {"type": "prometheus", "uid": "prometheus"},
"expr": "plex_sessions_paused",
"legendFormat": "Paused",
"refId": "B"
}
],
"title": "Sessions Over Time",
"type": "timeseries"
},
{
"datasource": {
"type": "prometheus",
"uid": "prometheus"
},
"fieldConfig": {
"defaults": {
"color": {
"mode": "palette-classic"
},
"custom": {
"axisBorderShow": false,
"axisCenteredZero": false,
"axisColorMode": "text",
"axisLabel": "",
"axisPlacement": "auto",
"barAlignment": 0,
"drawStyle": "line",
"fillOpacity": 10,
"gradientMode": "none",
"hideFrom": {
"legend": false,
"tooltip": false,
"viz": false
},
"insertNulls": false,
"lineInterpolation": "linear",
"lineWidth": 1,
"pointSize": 5,
"scaleDistribution": {
"type": "linear"
},
"showPoints": "auto",
"spanNulls": false,
"stacking": {
"group": "A",
"mode": "none"
},
"thresholdsStyle": {
"mode": "off"
}
},
"mappings": [],
"thresholds": {
"mode": "absolute",
"steps": [
{"color": "green", "value": null}
]
},
"unit": "short"
},
"overrides": [
{
"matcher": {"id": "byName", "options": "Video Transcode"},
"properties": [
{"id": "color", "value": {"fixedColor": "red", "mode": "fixed"}}
]
},
{
"matcher": {"id": "byName", "options": "Audio Transcode"},
"properties": [
{"id": "color", "value": {"fixedColor": "orange", "mode": "fixed"}}
]
}
]
},
"gridPos": {"h": 8, "w": 12, "x": 12, "y": 8},
"id": 11,
"options": {
"legend": {
"calcs": ["mean", "max"],
"displayMode": "list",
"placement": "bottom",
"showLegend": true
},
"tooltip": {
"mode": "multi",
"sort": "none"
}
},
"pluginVersion": "10.0.0",
"targets": [
{
"datasource": {"type": "prometheus", "uid": "prometheus"},
"expr": "plex_transcode_video_sessions",
"legendFormat": "Video Transcode",
"refId": "A"
},
{
"datasource": {"type": "prometheus", "uid": "prometheus"},
"expr": "plex_transcode_audio_sessions",
"legendFormat": "Audio Transcode",
"refId": "B"
}
],
"title": "Transcode Sessions",
"type": "timeseries"
},
{
"datasource": {
"type": "loki",
"uid": "loki"
},
"gridPos": {"h": 8, "w": 24, "x": 0, "y": 16},
"id": 12,
"options": {
"dedupStrategy": "none",
"enableLogDetails": true,
"prettifyLogMessage": false,
"showCommonLabels": false,
"showLabels": false,
"showTime": true,
"sortOrder": "Descending",
"wrapLogMessage": false
},
"targets": [
{
"datasource": {"type": "loki", "uid": "loki"},
"expr": "{service=\"plex\"}",
"refId": "A"
}
],
"title": "Plex Logs",
"type": "logs"
}
],
"refresh": "30s",
"schemaVersion": 38,
"tags": ["plex", "media"],
"templating": {
"list": []
},
"time": {
"from": "now-6h",
"to": "now"
},
"timepicker": {},
"timezone": "browser",
"title": "Plex Media Server",
"uid": "plex",
"version": 1,
"weekStart": ""
}